1001001513 has 16 divisors (see below), whose sum is σ = 1366341696. Its totient is φ = 651618240.

The previous prime is 1001001503. The next prime is 1001001517. The reversal of 1001001513 is 3151001001.

It is not a de Polignac number, because 1001001513 - 2⁵ = 1001001481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001001517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18631 + ... + 48467.

It is an arithmetic number, because the mean of its divisors is an integer number (85396356).

Almost surely, 2^1001001513 is an apocalyptic number.

It is an amenable number.

1001001513 is a deficient number, since it is larger than the sum of its proper divisors (365340183).

1001001513 is a wasteful number, since it uses less digits than its factorization.

1001001513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30104.

The product of its (nonzero) digits is 15, while the sum is 12.

The square root of 1001001513 is about 31638.6079497819. The cubic root of 1001001513 is about 1000.3337262810. Note that the first 3 decimals are identical.

Adding to 1001001513 its reverse (3151001001), we get a palindrome (4152002514).

The spelling of 1001001513 in words is "one billion, one million, one thousand, five hundred thirteen".